| Strain | Pseudomonas aeruginosa M18 |
| GI | 386060047 |
| Locus Tag | PAM18_3986 |
| Description | putative monovalent cation/H+ antiporter subunit F |
| Strain | Pseudomonas resinovorans NBRC 106553 |
| GI | 512617261 |
| Locus Tag | PCA10_16080 |
| Description | Na(+)/H(+) antiporter subunit F |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28870636 |
| Locus Tag | PSPTO_3475 |
| Description | potassium efflux system protein PhaF |